Publications Peer reviewed articles (34) Flat Bands in Magic-Angle Vibrating Plates Author(s): María Rosendo López, Fernando Peñaranda, Johan Christensen, Pablo San-Jose Published in: Physical Review Letters, Issue 125/21, 2020, ISSN 0031-9007 Publisher: American Physical Society DOI: 10.1103/physrevlett.125.214301 Ultrasonic nodal chains in topological granular metamaterials Author(s): Aurélien Merkel, Johan Christensen Published in: Communications Physics, Issue 2/1, 2019, ISSN 2399-3650 Publisher: Nature Partner Journals DOI: 10.1038/s42005-019-0256-z Subwavelength Acoustic Valley-Hall Topological Insulators Using Soda Cans Honeycomb Lattices. Author(s): Zhiwang Zhang; Y. Gu; Houyou Long; Ying Cheng; Xiaojun Liu; Johan Christensen Published in: Research, Vol 2019 (2019), Issue 1, 2019, ISSN 2639-5274 Publisher: American Association for the Advancement of Science DOI: 10.34133/2019/5385763 Flexible mechanical metamaterials Author(s): Katia Bertoldi; Vincenzo Vitelli; Vincenzo Vitelli; Johan Christensen; Martin van Hecke Published in: VOLUME=2;STARTPAGE=17066;TITLE=Nature Reviews Materials, Issue 1, 2017, ISSN 2058-8437 Publisher: Nature Portfolio DOI: 10.1038/natrevmats.2017.66 Majorana-like Zero Modes in Kekulé Distorted Sonic Lattices Author(s): Penglin Gao; Daniel Torrent; Francisco Cervera; Pablo San-Jose; José Sánchez-Dehesa; Johan Christensen Published in: reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia, Issue 1, 2019, ISSN 0031-9007 Publisher: American Physical Society DOI: 10.1103/physrevlett.123.196601 Slow Surface Acoustic Waves via Lattice Optimization of a Phononic Crystal on a Chip Author(s): Si-Yuan Yu, Ji-Qian Wang, Xiao-Chen Sun, Fu-Kang Liu, Cheng He, Huan-Huan Xu, Ming-Hui Lu, Johan Christensen, Xiao-Ping Liu, Yan-Feng Chen Published in: Physical Review Applied, Issue 14/6, 2020, ISSN 2331-7019 Publisher: American Physical Society DOI: 10.1103/physrevapplied.14.064008 Knitting topological bands in artificial sonic semimetals Author(s): Li-Yang Zheng; Xiujuan Zhang; Ming-Hui Lu; Yan-Feng Chen; Johan Christensen Published in: Materials Today Physics, Issue 1, 2020, ISSN 2542-5293 Publisher: Elsevier DOI: 10.1016/j.mtphys.2020.100299 Topological radiation engineering in hyperbolic sonic semimetals Author(s): Li-Yang Zheng; Johan Christensen Published in: Phys. Rev. B, Issue 1, 2021, ISSN 2469-9950 Publisher: American Physical Society DOI: 10.1103/physrevb.103.064307 Orbital Angular Momentum Multiplexing in Space–Time Thermoacoustic Metasurfaces Author(s): Yurou Jia; Yimin Liu; Bolun Hu; Wei Xiong; Yechao Bai; Ying Cheng; Dajian Wu; Xiaojun Liu; Johan Christensen Published in: Crossref, Issue 1, 2022, ISSN 0935-9648 Publisher: United Nations Industrial Developement Organization DOI: 10.1002/adma.202202026 Mechanical Analogue of a Majorana Bound State Author(s): Chun‐Wei Chen, Natalia Lera, Rajesh Chaunsali, Daniel Torrent, Jose Vicente Alvarez, Jinkyu Yang, Pablo San‐Jose, Johan Christensen Published in: Advanced Materials, Issue 31/51, 2019, Page(s) 1904386, ISSN 0935-9648 Publisher: United Nations Industrial Developement Organization DOI: 10.1002/adma.201904386 Topological Sound Pumping of Zero‐Dimensional Bound States Author(s): Penglin Gao, Johan Christensen Published in: Advanced Quantum Technologies, Issue 3/9, 2020, Page(s) 2000065, ISSN 2511-9044 Publisher: Advanced Quantum Technologies (Wiley-VCH GmbH, Weinheim) DOI: 10.1002/qute.202000065 Subwavelength multiple topological interface states in one-dimensional labyrinthine acoustic metamaterials Author(s): Zhiwang Zhang, Ying Cheng, Xiaojun Liu, Johan Christensen Published in: Physical Review B, Issue 99/22, 2019, ISSN 2469-9950 Publisher: American Physical Society DOI: 10.1103/physrevb.99.224104 Corner states in second-order mechanical topological insulator Author(s): Chen, Chun-Wei; Chaunsali, Rajesh; Christensen, Johan; Theocharis, Georgios; Yang, Jinkyu Published in: communications materials, Issue 18, 2021, ISSN 2662-4443 Publisher: Nature Publishing DOI: 10.48550/arxiv.2009.03525 Multiple scattering theory of non-Hermitian sonic second-order topological insulators Author(s): María Rosendo López, Zhiwang Zhang, Daniel Torrent, Johan Christensen Published in: Communications Physics, Issue 2/1, 2019, ISSN 2399-3650 Publisher: Nature Research DOI: 10.1038/s42005-019-0233-6 Polarization bandgaps and fluid-like elasticity in fully solid elastic metamaterials. Author(s): Guancong Ma; Caixing Fu; Guanghao Wang; Philipp del Hougne; Johan Christensen; Yun Lai; Ping Sheng Published in: instname:, Issue 1, 2016, ISSN 2041-1723 Publisher: Nature Publishing Group DOI: 10.1038/ncomms13536 Dynamic Nonreciprocity in Loss-Compensated Piezophononic Media Author(s): Aurélien Merkel, Morten Willatzen, Johan Christensen Published in: Physical Review Applied, Issue 9/3, 2018, ISSN 2331-7019 Publisher: American Physical Society DOI: 10.1103/physrevapplied.9.034033 Optical force rectifiers based on PT-symmetric metasurfaces Author(s): Rasoul Alaee, Burak Gurlek, Johan Christensen, Muamer Kadic Published in: Physical Review B, Issue 97/19, 2018, ISSN 2469-9950 Publisher: American Physical Society DOI: 10.1103/physrevb.97.195420 Optical Pulling and Pushing Forces in Bilayer P T -Symmetric Structures Author(s): Rasoul Alaee, Johan Christensen, Muamer Kadic Published in: Physical Review Applied, Issue 9/1, 2018, ISSN 2331-7019 Publisher: APS DOI: 10.1103/PhysRevApplied.9.014007 Experimental verification of acoustic pseudospin multipoles in a symmetry-broken snowflakelike topological insulator Author(s): Zhiwang Zhang, Ye Tian, Ying Cheng, Xiaojun Liu, Johan Christensen Published in: Physical Review B, Issue 96/24, 2017, ISSN 2469-9950 Publisher: APS DOI: 10.1103/PhysRevB.96.241306 Valley Hall phases in kagome lattices Author(s): Natalia Lera, Daniel Torrent, P. San-Jose, J. Christensen, J. V. Alvarez Published in: Physical Review B, Issue 99/13, 2019, ISSN 2469-9950 Publisher: APS DOI: 10.1103/PhysRevB.99.134102 Directional Acoustic Antennas Based on Valley-Hall Topological Insulators Author(s): Zhiwang Zhang, Ye Tian, Yihe Wang, Shuxiang Gao, Ying Cheng, Xiaojun Liu, Johan Christensen Published in: Advanced Materials, Issue 30/36, 2018, Page(s) 1803229, ISSN 0935-9648 Publisher: United Nations Industrial Developement Organization DOI: 10.1002/adma.201803229 Topological sound Author(s): Xiujuan Zhang, Meng Xiao, Ying Cheng, Ming-Hui Lu, Johan Christensen Published in: Communications Physics, Issue 1/1, 2018, ISSN 2399-3650 Publisher: NPG DOI: 10.1038/s42005-018-0094-4 Non-Hermitian Sonic Second-Order Topological Insulator Author(s): Zhiwang Zhang, María Rosendo López, Ying Cheng, Xiaojun Liu, Johan Christensen Published in: Physical Review Letters, Issue 122/19, 2019, ISSN 0031-9007 Publisher: American Physical Society DOI: 10.1103/PhysRevLett.122.195501 Valley Physics in Non-Hermitian Artificial Acoustic Boron Nitride Author(s): Mudi Wang, Liping Ye, J. Christensen, Zhengyou Liu Published in: Physical Review Letters, Issue 120/24, 2018, ISSN 0031-9007 Publisher: American Physical Society DOI: 10.1103/PhysRevLett.120.246601 Unidirectional zero sonic reflection in passive PT -symmetric Willis media Author(s): Aurélien Merkel, Vicent Romero-García, Jean-Philippe Groby, Jensen Li, Johan Christensen Published in: Physical Review B, Issue 98/20, 2018, ISSN 2469-9950 Publisher: APS DOI: 10.1103/PhysRevB.98.201102 Ultrathin acoustic parity-time symmetric metasurface cloak Author(s): Li, Hao-Xiang; Rosendo-Lopez, Maria; Zhu, Yi-Fan; Fan, Xu-Dong; Torrent, Daniel; Liang, Bin; Cheng, Jian-Chum; Christensen, Johan Published in: SPJ Research, Issue 1, 2019, ISSN 2058-8437 Publisher: Under review in SPJ Research Topological Acoustic Delay Line Author(s): Zhiwang Zhang, Ye Tian, Ying Cheng, Qi Wei, Xiaojun Liu, Johan Christensen Published in: Physical Review Applied, Issue 9/3, 2018, ISSN 2331-7019 Publisher: APS DOI: 10.1103/PhysRevApplied.9.034032 Deep‐Subwavelength Holey Acoustic Second‐Order Topological Insulators Author(s): Zhiwang Zhang, Houyou Long, Chen Liu, Chen Shao, Ying Cheng, Xiaojun Liu, Johan Christensen Published in: Advanced Materials, Issue 31/49, 2019, Page(s) 1904682, ISSN 0935-9648 Publisher: United Nations Industrial Developement Organization DOI: 10.1002/adma.201904682 Sonic valley-Chern insulators Author(s): Penglin Gao, Zhiwang Zhang, Johan Christensen Published in: Physical Review B, Issue 101/2, 2020, ISSN 2469-9950 Publisher: American Physical Society DOI: 10.1103/physrevb.101.020301 Dirac Hierarchy in Acoustic Topological Insulators. Author(s): Li-Yang Zheng; Johan Christensen Published in: Physical Review Letters, Issue 4, 2021, ISSN 0031-9007 Publisher: American Physical Society DOI: 10.1103/physrevlett.127.156401 Non-Hermitian topological whispering gallery Author(s): B. Hu, Z. Zhang, H. Zhang, L. Zheng, W. Xiong, Z. Yue, X. Wang, J. Xu, Y. Cheng, X. Liu, and J. Christensen Published in: Nature, 2021, ISSN 0028-0836 Publisher: Nature Publishing Group DOI: 10.1038/s41586-021-03833-4 Pseudospin induced topological corner state at intersecting sonic lattices Author(s): Zhiwang Zhang, Bolun Hu, Feng Liu, Ying Cheng, Xiaojun Liu, Johan Christensen Published in: Physical Review B, Issue 101/22, 2020, ISSN 2469-9950 Publisher: American Physical Society DOI: 10.1103/physrevb.101.220102 $\PT$ symmetric sonic crystals: From asymmetric echoes to supersonic speeds Author(s): Maria Rosendo-Lopez; Aurélien Merkel; Johan Christensen Published in: instname:Universidad Carlos III de Madrid (UC3M), Issue 4, 2018, ISSN 0295-5075 Publisher: EDP Sciences DOI: 10.1209/0295-5075/124/34001 Anomalous Topological Edge States in Non-Hermitian Piezophononic Media Author(s): Penglin Gao, Morten Willatzen, Johan Christensen Published in: Physical Review Letters, Issue 125/20, 2020, ISSN 0031-9007 Publisher: American Physical Society DOI: 10.1103/physrevlett.125.206402 Searching for OpenAIRE data... 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